Port to TypeScript/Ink, redesign CLI per clig.dev, add E2E testing#2

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Copilot wants to merge 6 commits intomainfrom

copilot/decide-on-cli-framework

Commits on Feb 18, 2026

Initial plan
Copilot
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Add ADRs and TypeScript/Ink scaffold with core data model, parser, and CLI commands

Copilot
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dudash
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Redesign CLI following clig.dev guidelines: subcommands, --json, --plain, stderr/stdout separation

Copilot
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dudash
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Address code review: extract magic numbers as named constants for column widths

Copilot
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dudash
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Add robust E2E testing framework with 53 tests covering all CLI commands and behaviors

Copilot
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dudash
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Address code review: use specific type for KV metadata entries in E2E test

Copilot
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dudash
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